Multiple punching-machine.



m. 655,252. Patented Aug. 14, I900.

- c. E. BLECHSCHMIDT.

MULTIPLE PUNCHING MACHINE.

lApplication med Feb. 16, 1900.

(No Model.)

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CHARLES E. BLECHSCI-IMIDT, OF BELLEVUE, KENTUCKY, ASSIGNOR TO THE VICTOR SAFE AND LOCK COMPANY, OF CINCINNATI, OHIO.

MULTIPLE PUNCHlNG-MACHINE,

SPECIFICATION forming part of Letters Patent No. 65 5,752, dated August 14, 1900.

Application filed February 16, 1900. Serial No. 5 442. (No model.) i

To all whom it may concern:

Be it known that I, CHARLES E. BLncn SCHMIDT, a citizen of the United States, residing at'Bellevue, in the county of Campbell and State of Kentucky, have invented certain new and useful Improvements in Mul tiple Punching-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form a part of this specification.

My invention comprises a machine in which is journaled a long eccentric shaft that operates a gang of plungers reciprocatingin shiftable heads capable of being adjusted to any desired position with reference to each ot-her that is to say, nearer together or farther apart, according to the special kind of work to be done. Each plunger is provided with a punch, and at every complete rotation of said shaft said punches are simultaneously advanced and retracted, thereby makinga number of perforations in a baror plate, as hereinafter more fully described.

In the accompanying drawings, Figure 1 is a front elevation of my multiple punchingmachine, its gang of plungers being retracted or elevated. Fig. 2 is an enlarged transverse section of the upper portion of the machine. Fig. 3 is an elevation of the aforesaid portion of the machine, a cap-plate being removed from a head to expose a reciprocating plun-l ger of the latter. Fig. 4 is an enlarged plan of a bolster and a portion of a bed-plate within which it is secured. Fig. 5 is a plan of said bolster detached from the bed-plate.

A A A are vertical standards of my machine, and B is a driving-shaft journaled in the standards A A, said shaft bein g provided with a pulley b, fly-wheel l), and pinion b", which latter gears with a spur-wheel C, loosely mounted upon a horizontal counter-shaft D and near one end thereof. The hub c of wheel C is adapted to be engaged by a clutch E, driven by a feather d of the aforesaid shaft. Clutch E is operated by a bell-crank lever B, from which a rod 6' runs down to a treadle F, below which is arranged a sprin g f, that normally tends to elevate the free end of said treadle, and thus disengage said clutch from the spur-wheel C.

part the desired throw to the plungers,

I Made integral with the shaft D or securely mounted upon it, but eccentric thereto, is a shaft G, the eccentricity being such as to imand below this shaft and parallel therewith, but not in the same vertical plane, is a stiff frame H, of channel-iron, that assists in tying together'the standards A and A". Projecting from the front of this channel-iron are longitudinal ribs or guides 7L h, carrying the shiftable heads I, of which any suitable number may be applied to the machine. Each head has a vertical mortise 2', covered with a capplate J, so as to confine a plunger K to a proper path, the plunger being operated by a pitman L, coupled to a strap M, surrounding shaft G. The upper end of plunger K is forked at 70 to admit a knuckle Z, through which latter is passed a pin 7r, wherewith the pitruan is coupled to said plunger. Z is a half-box surrounding the lower portion of the knuckle and serving to distribute the thrust on the downward or punching stroke of the pitman.

a v Cap-plate J is slotted vertically at j to admit free play of a clamp-screw j, Wherewith a punch-holder or socket N is secured within the plunger K. 'n is any suitable punch inserted within said holder. 7

O O are clanip-screws tapped in the head I and adapted to bear upon the upper rib h of channel-iron H, so as to retain said head in any desired position.

Arranged longitudinally of the machine and serving as one of theties for binding together the standards A and A is a bed-plate P, having a groove 19 along its upper surface, the sides of said groove being undercut to prevent any upward detachment of bolsters R, of which devices one is provided for each punch. Furthermore, the upper surface of the bolster is grooved from front to rear, as shown at r in Fig. 4, to admit a block S, which is held to any specific adjustment along said groove by clamp-screws rr'. s isanother clamp-screw that retains a punch-die T within theblock S. The outer diameter of the die must be such as to enable it being readily inserted in the block; but the bore of said die will, as a matter of course, be determined by the size of the punch that enters it.

U U are clamp-screws engaged with the bed-plate P and serving to hold the bolster R in proper position with reference to the punches, and also so as to enable the punchings to pass through a hole 1) of said plate. (See Fig. 2.)

Vis aleg or prop that supports the central portion of the bed-plate.

The operation of this machine is as follows: Normally the springfswings up the treadle F, so as to shift the clutch E until it contacts with the standard A, and as said clutch is thus disengaged from the hub c of spur-Wheel C it is evident any turning of the drivingshaft B will not rotate the counter-shaft D. Consequently shaft G is inoperative and the punching mechanism can be readily adjusted to any kind of work. In effecting this adjustment the bolsters R are first shifted along the bed-plate P until the dies '1 of said bolsters are in a proper position to enable the required holes to be made in a piece of work, after which act the screws U U are tightened to retain said bolsters in place. The next step consists in shifting the heads I until their respective punches n are vertically in line with the bore of said dies, and then said heads are held in place by simply tightening the screws 0 0. Having effected these adjustments, the bar or plate or other piece of work is laid flatly upon the bolsters, and the treadle F being now depressed the shaft D is clutched to the wheel 0 and caused to make one complete revolution, the result being to force down all the plungers K and then to elevate or retract them, and during this descending stroke of said plnngers all the punches n are'sim ultaneously driven through the piece of work. As soon as the plungers are elevated the machine is again rendered inoperative by removing pressure from the treadle F, and then the work is removed and another piece inserted in its place.

I claim as my invention 1. In a multiple punchingmachine, the combination of an operating-shaft eccentrically mounted, punch-carrying plungers operatively connected thereto and independent dies, one for each of said punches, all said parts being supported so as to be independently adjustable in a lateral direction with reference to each other and with reference to the operating-shaft.

2. In a multiple punching-machine, the combination of a frame having upright and horizontal members, heads carried on one of these latter and supported thereon, so that each is independently adjustable in a lateral direction to and from the other heads, plungers, one fitted to each of these heads in a manner to be capable of a reciprocating motion in a direction at right angles to the direction of adjustment of said heads which latter serve as guides for said plungers, punches carried by each of these latter, complementary dies, one of each for these punches, said dies also supported on one of the longitudinal members of the frame and each independently adjustable in a lateral direction with reference to the other dies and to meet the position of the punches, an operating-shaft eccentrically mounted and an independent operative connection between this latter and each of the plungers.

3. Thecombinatiominamultiplepunchingmachine, of the standards A A, having a common eccentric shaft G journaled in them; a longitudinally-ribbed tie H h 71, uniting said standards; shiftable heads I carried by said tie; plungers K reciprocating within said heads, and armed with punches n; pitman L connecting said plungers with said shaft and a grooved bed-plate P p, provided with shiftable bolsters It, having dies T inserted in them, all as herein described, and for the purpose stated.

4. In a punching-machine, the bed-plate P, having an undercut groove 19, along its upper surface; a bolster B traversing said groove and provided with a groove 0 and clamp screws 1"", r; a block S fitted within said groove 1-, and furnished with a die T, and a clamp-screw s, tapped in said block and bearing against said die, for the purpose stated.

In testimony whereof I affix my signature in presence of two Witnesses.

CHARLES E. BLECIISOI'IMIDT.

Witnesses:

JAMES H. LAYMAN, Jnssn M. SIMON. 

